<template>
  <el-form ref="deptForm" :model="form" :rules="rules" label-width="120px">
    <el-form-item label="部门名称" prop="name">
      <el-input v-model="form.name" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门编码" prop="code">
      <el-input v-model="form.code" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门负责人" prop="manager">
      <el-select v-model="form.manager" style="width:80%" placeholder="请选择">
        <el-option
          v-for="item in list"
          :key="item.id"
          :value="item.username"
          :label="item.username"
        />
      </el-select>
    </el-form-item>
    <el-form-item label="部门介绍" prop="introduce">
      <el-input
        v-model="form.introduce"
        style="width:80%"
        placeholder="1-300个字符"
        type="textarea"
        :rows="3"
      />
    </el-form-item>
    <el-form-item>
      <el-button type="primary" size="small" @click="hSubmit">确定</el-button>
      <el-button size="small" @click="hCancel">取消</el-button>
    </el-form-item>
  </el-form>
</template>

<script>
import { addDepartments, getEmployeesSimple,
  getDepartmentsDetail, editDepartments } from '@/api/departments'
export default {
  props: {
    originList: {
      type: Array,
      required: true
    },
    id: {
      type: String,
      required: true
    },
    isEdit: {
      type: Boolean,
      required: true
    }
  },
  data() {
    // 自定义检验规则函数
    const existCodeValid = (rule, value, callback) => {
      // 验证输入的编码value在所有的部门中是否存在
      let existCodeList = this.originList.map(item => item.code)
      // 确定是否是编辑的状态
      if (this.isEdit) {
        // 根据id将当前编辑的部门id从所有的部门中移除
        existCodeList = this.originList.filter(item => item.id !== this.id).map(item => item.code)
      }

      console.log(existCodeList, 'existCodeList')
      if (existCodeList.includes(value)) {
        // 存在，检验失败
        callback(new Error(`部门编码: ${value}已存在`))
      } else {
        // 不存储，放行  callback()
        callback()
      }
    }
    // 自定义检验规则函数
    const existNameValid = (rule, value, callback) => {
      // 验证输入的部门名称value在同级不能重复
      let existNameList = this.originList.filter(item => item.pid === this.id).map(item => item.name)
      console.log(existNameList, 'existNameList')
      // 确实是否是编辑的状态
      if (this.isEdit) {
        const pid = this.originList.find(item => item.id === this.id).pid // 根据this.id获取当前对象的pid
        const brothers = this.originList.filter(item => item.pid === pid) // 找到所有的兄弟包括自己
        existNameList = brothers.filter(item => item.id !== this.id).map(item => item.name)
      }
      if (existNameList.includes(value)) {
        callback(new Error(`部门名称: ${value}已存在`))
      } else {
        callback()
      }
    }
    return {
      // 表单收集的数据对象
      form: {
        name: '',
        code: '',
        manager: '',
        introduce: ''
      },
      // 检验规则对象
      rules: {
        name: [
          { required: true, message: '请输入部门的名称', trigger: 'blur' },
          { min: 1, max: 50, message: '请输入长度是1~50的部门名称', trigger: 'blur' },
          { validator: existNameValid, trigger: 'blur' }
        ],
        code: [
          { required: true, message: '请输入部门的编码', trigger: 'blur' },
          { min: 1, max: 50, message: '请输入长度是1~50的部门编码', trigger: 'blur' },
          { validator: existCodeValid, trigger: 'blur' }
        ],
        manager: [
          { required: true, message: '请选择部门的负责人', trigger: ['blur', 'change'] }
        ],
        introduce: [
          { required: true, message: '请输入部门的介绍', trigger: 'blur' },
          { min: 1, max: 300, message: '请输入长度是1~300的部门介绍', trigger: 'blur' }
        ]
      },
      list: [] // 保存的是部门负责人
    }
  },
  // 解决数据不更新的方式3
  // 监听watch : 侦听id的变化，一旦变化，就调用loadDepartmentsDetail重新获取详情数据，重新填充表单
  // watch: {
  // 简单的数据类型，开启侦听
  // id: function(new_value, old_value) {
  //   console.log(new_value, 'new_value')
  //   console.log(old_value, 'old_value')
  //   this.loadDepartmentsDetail()
  // }
  // id: {
  //   // 正对于复杂的数据类型，可以开启深度侦听或者需要页面打开就立即加载
  //   handler: function(new_value, old_value) {
  //     console.log(new_value, 'new_value')
  //     console.log(old_value, 'old_value')
  //     this.loadDepartmentsDetail()
  //   },
  //   deep: true, // 开启深度侦听
  //   // 立即加载
  //   immediate: true

  // }
  // },
  created() {
    this.loadEmployeesSimple()
    // 如果是编辑部门，才有需要获取部门详情数据进行回填
    if (this.isEdit) {
      this.loadDepartmentsDetail()
    }
  },
  methods: {
    // 清空表单
    resetForm() {
      this.$refs.deptForm.resetFields() // 清空表单
    },
    // 加载部门详情数据
    async loadDepartmentsDetail() {
      try {
        const res = await getDepartmentsDetail(this.id)
        console.log(res, 'getDepartmentsDetail')
        // 添加获取到的数据填充到表单
        this.form = res.data
      } catch (error) {
        console.log(error)
      }
    },
    async  loadEmployeesSimple() {
      try {
        const res = await getEmployeesSimple()
        console.log(res, 'getEmployeesSimple')
        this.list = res.data
      } catch (error) {
        console.log(error)
      }
    },
    // 实现新增子部门
    async doAdd() {
      try {
        // this.form ,参数缺少pid？？？？
        const res = await addDepartments({ ...this.form, pid: this.id })
        console.log(res, 'addDepartments')
        // 子传父---》// 关闭弹层，重新刷新页面
        this.$emit('success')
      } catch (error) {
        console.log(error)
      }
    },
    async doEdit() {
      // 实现编辑部门功能
      try {
        // this.form ,参数缺少pid？？？？
        const res = await editDepartments(this.form)
        console.log(res, 'editDepartments')
        // 子传父---》// 关闭弹层，重新刷新页面
        this.$emit('success')
      } catch (error) {
        console.log(error)
      }
    },
    hSubmit() {
      //   2. 兜底校验
      this.$refs.deptForm.validate((valid) => {
        // 检验失败
        if (!valid) return
        // 检验通过
        this.isEdit ? this.doEdit() : this.doAdd()
      })
    },
    hCancel() {
      //  关闭弹层---》弹层在父组件啊
      this.$emit('close')
    }
  }
}
</script>

